Effects of open-label placebos and self-monitoring in skin-picking disorder: a randomized crossover trial.

3.2.3 Stress level The main effect of condition (OLP, No OLP) did not reach statistical significance (F(1, 1077.15) = 0.02, p = .887). 3.2.4 Open comments No adverse side effects were reported by the participants. 3.3 Perceived treatment efficacy Expected efficacy of the OLP before treatment (M = 31.38, SD = 21.03) did not differ from the perceived efficacy at the end of the trial (M = 27.96, SD = 25.76, t(51) = 0.91, p = .37, d = 0.13).

also in 111,027 other papers